Hach-Lange HQD - Conductivity probe CDC - Manual (Page 6)

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Clean the probe
• For general contaminants, rinse the electrode with deionized water and gently wipe
dry with a clean cloth.
• For greases and oils, soak the electrode with detergent solution and warm water.
Thoroughly rinse the electrode with deionized water and gently wipe dry with a clean
cloth.
• For mineral buildup, soak the electrode in a dilute 10% hydrochloric acid (HCl)
solution for less than 5 minutes. Thoroughly rinse the electrode with deionized water
and gently wipe dry with a clean cloth.
Advanced operation
Parameter-specific settings can be changed through the Full Access Options menu.
Details about menu navigation, available options and how to change them are given in the
screens, tables and procedures throughout this section.
The settings that can be changed are shown in Table 1 .
Change measurement options
Methods are groups of default or user defined settings relevant to specific applications. If
the meter is set to the default method and the Modify Current Settings option is chosen,
the user will be prompted to name the method after changes are entered. The settings are
saved with this name to distinguish them from the default method settings, which cannot
be changed. The user can then switch to a saved method instead of repeatedly adjusting
individual settings. Changes made to a user defined method are automatically saved with
the existing name. Multiple methods can be saved for the same probe.
Table 2 lists the five default methods available for the CDC401 conductivity cell.
Table 1 Parameter-specific settings
Setting Options
Parameter
• Conductivity
• Salinity
• TDS
• Resistivity
Measurement options
• Units
• Measurement limits
• Temperature correction
• Correction factor (if linear temperature correction is selected)
• Reference temperature (if a temperature correction is selected)
Calibration options
• Standard
• Calibration reminder
• Standard units (if Custom option is selected)
• Standard value (if Custom option is selected)
• Reference temperature (if Custom option is selected)
• Temperature correction (if Custom option is selected)
Check standard options
• Standard solution for calibration verification
• Reminder
• Acceptance criteria